منابع مشابه
Pulsar Death at an Advanced Age
I summarize the theory of acceleration of non-neutral particle beams by starvation electric fields along the polar magnetic field lines of rotation powered pulsars, including the effect of dragging of inertial frames which dominates the acceleration of a space charge limited beam. I apply these results to a new calculation of the radio pulsar death line, under the hypotheses that pulsar “death”...
متن کاملO-15: Advanced Age Women and Miscarriage Rate
Background: Study question: what is the effect of advanced aged in pregnant women using assisted reproductive technology on the rate of miscarriages? Summary answer: the advanced age effects on the rate of miscarriages. What is known already: It is well known that miscarriage risk increases with age. The proportion of women giving birth after 35 years of age has risen considerably in developing...
متن کاملApical hypertrophic cardiomyopathy developing at a relatively advanced age.
A56-year-old asymptomatic man was identified in 1984 with an abnormal 12-lead ECG during a routine examination for a recreational pilot license. An ECG 2 years earlier was normal (Figure 1). Extensive work-up in 1984, including stress testing and coronary arteriography, showed no significant abnormality. In addition, an echocardiogram was within normal limits (Figure 2). In 1994, at 66 years of...
متن کاملData Mining Techniques for Mortality at Advanced Age
This paper addresses issues and techniques for advanced age mortality study using data mining techniques, a new technology on the horizon with great actuarial potential. Data mining is an interactive information discovery process that includes data acquisition, data integration, data exploration, model building, and model validation. Both expert opinion and information discovery techniques are ...
متن کاملpregnancy outcomes in women of advanced age
objective: the aim of this study was to investigate prenatal and obstetrical outcome in mothers aged 40 years or older. materials and methods: a prospective comparative study was conducted for the women aged 40 years and over who delivered at 20 week's gestation or beyond from january 2004 to december 2005 at four hospitals of tehran university of medical sciences. for comparison, a control gro...
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ژورنال
عنوان ژورنال: The Lancet
سال: 1922
ISSN: 0140-6736
DOI: 10.1016/s0140-6736(01)33012-x